// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements.  See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership.  The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License.  You may obtain a copy of the License at
//
//   http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied.  See the License for the
// specific language governing permissions and limitations
// under the License.

import { useReducer, useCallback } from 'react';

interface State<T> {
    loading: boolean;
    data: T | null;
    error: Error | null;
}

const defaultState = {
    loading: false,
    data: null,
    error: null,
};

export function useAsync<T>(initialState?: Partial<State<T>>) {
    const [state, dispatch] = useReducer((state: State<T>, action: Partial<State<T>>) => ({ ...state, ...action }), {
        ...defaultState,
        ...initialState,
    });

    const run = useCallback(
        (promise: Promise<T>) => {
            dispatch({ loading: true });
            return promise
                .then(data => {
                    dispatch({ loading: false, data, error: null });
                    return data;
                })
                .catch(error => {
                    dispatch({ loading: false, data: null, error });
                    return Promise.reject(error);
                });
        },
        [dispatch],
    );

    return {
        run,
        dispatch,
        ...state,
    };
}
